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Git Storage Estimate

Free Git Storage Estimate calculator with clear step-by-step results.

About Git Storage Estimate

Git stores compressed deltas for text, so a source change of 45 KB typically costs around a third of that on disk, while binary blobs compress poorly and are effectively stored whole. Splitting changes into text and binary shares is what makes a history estimate land near reality.

Formulas

History size

MB = commits x (text delta x 0.35 + binary delta) / 1024

Repository size

Repo = working tree + history objects

Worked example

With the default values below, Git Storage Estimate returns Estimated repository size of 382.6. Change any input above and every figure here is recalculated in your browser.

Inputs used

Working tree sizeminimum 0 MB
120 MB
Commits per monthminimum 0
400
Average change per commitminimum 0 KB
45 KB
Share of changes that are binaryaccepts 0–100 %
10 %
Months of history to keepaccepts 1–240
36

Results

Estimated repository size
382.6 MB
Size of the object history
262.6 MB
Size of a full clone
390.3 MB
Commits retained
14,400 commits

Step by step

  1. 1Values used
  2. 2History size
  3. 3Repository size
  4. 4Estimated repository size= 382.6 MB
  5. 5Size of the object history= 262.6 MB
  6. 6Size of a full clone= 390.3 MB
  7. 7Commits retained= 14,400 commits

Assumptions and limits

  • The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why do binaries bloat a repository so badly?

Delta compression and zlib both rely on redundancy that compiled binaries, images and archives do not have. Every version is stored at close to full size, forever, even after deletion.

How do I shrink an oversized repository?

Move large binaries to Git LFS or an artefact store, then rewrite history to drop the blobs. A shallow or partial clone reduces what developers download without changing the server-side size.

Related Calculators

Git Storage Estimate – Calculate Estimated repository size